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Message: <blockquote data-quote="SteveMM" data-source="post: 3523030" data-attributes="member: 130392">Thanks again for your help with this bird, JanJ.I find the wingtip pattern extreme in the amount of grey tongue reaching right up to the shafts of P10-9, and it seems extreme even when compared to the 'uncommon pattern' variant in the link you provide <a href="http://gull-research.org/cachinnans/03cyfebr.html" target="_blank">http://gull-research.org/cachinnans/03cyfebr.html</a>. However, I do agree with you about bill size/length and especially with the width of the trailing edge, so therefore agree this bird has to be mongolicus.An educational if ultimately disappointing bird, given that I've been looking for that wingtip pattern for quite a number of years now!</blockquote>